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P. F. SPERY. RADIATOR FOR MOTOR VEHICLES AND THE LIKE.

APPLICATION FILED MAY II. 1918.

Patented Sept. 16, 1919.

zzvvmozz: J Z SPERY, BY 7 Fla. A

PHILMUHF F. $JPTEMJY, F CHICAGU, Hilillhlflllh.

Dltlt'tflllt FOIt MUTUllrVEJEHCLlEiL-i AND THE Lilith.

specification of ltcttcrs Patent. 7 Patented @nepit, llfi, ltllll'lll,

Application filed. May ii, iaia. serial no. acacia.

T 0 all whom it may concern.-

Be it known that l, 'PnrLMonn F. Srnnr, a citizen or the United States,and a resident of the city of Chicago, in the county oi Cook and Stateof llllinois, have inventedn.

-ertain new and useful Improvement in Radiators for MotonVehicles andthe like; and l do hereby declare that the following description of mysaid invention, taken in connection with the accompanying sheet ofdrawings, forms a fulLclear, and exactspecification, which will enableothers skilled in the art to which it appertains to make and Ell forcooling water in internal combustion engines, such'as are used inautomobiles, motor ill trucks, traction engines, launches, aeroplanes,and the like, in which the cylinders are cooled by water contained injackets surrounding the cylinders, and which water abstracts heat fromthe cylinders and is then conducted to a radiator, so-called, ofcellular construction, in which metallic surfaces are exposed tocurrents of air passing through the cellular structure, and therebyabsorb heat from the water, which water circulates between the engineand the cooler, and is constantly used over and over again.

Radiators of this nature are more or expensive to produce, bein usuallmade of copper or brass owing to iigh e ciency in heat conducting, andany improvement which has a tendency to reduce the cost of manufactureof the radiator, in view oi. the large quantity or radiators constantlyrequired, even to a slight extent, is a desideratum. I believe thatbythe construction of my improved radiator, as hereinafter set forth, lhave reduced the cost of production, simplified the methods ofmanufacturing, and produced an article of superior merit,

in the drawings forming a part of this specification, Figure l is afront elevation of a radiator embodying my improvements, no attentionbeing given in this figure to details of construction. is a verticaltransverse section on line 9-2 of Fig. l. lfig. 3 is an edge-view, andFig. i a side eleof units assembled;

less

1 the same plane,

vation of a strip oi metal forming a part of the means which assist inthe cooling effect of the radiator. Fig. 5 is an edge view, and Fig. 6is a plan of one of the cross bars associated with the strips of metalshown in Figs. 3 and a. Fig. i is an elevation of a portion ot a unitcomprising this radiator,

the figure being approximately full scale.

Fig. 8 is a sectional elevation on line 8-8 of Fig. 7. Fig. 9 is a frontelevation of a series and Fig. 10 is a plan of the same. Fig. 11 is asectional view of one of the units,'on line 11 of Fig. 7. Fig. 12 is astrip of metal forming a part of. the means which assist in the coolineifectof the radiator, slightly modified. 1g. 18 is a sectional plandetail of construction; and Fig. 14 is a like view on an increasedscale, illustrating the temporary means for securing the cross bar tothe vertical strip forming the heat conductor. Fi 15 is a sectional viewon line 11 of Fig. i, drawn on a slightly increased scale and showingthe two members of a core unit before being locked together. Fig. '16 isa sectional detail showing the connection of til a cross bar to themodified form of the verti cal bar illustrated in. Fig. 12.

Like parts are designated by the same characters and symbols ofreference in all the various figures.

This radiator comprises, Figs. 1 and 2, an outer casing, front and rear,and containing core B, and an upper water chamber lower water chamber D,the water from the engine. passing to the upper chamber through thewater passages in to the lower chamber D, and thence back to the engine.lfhis core comprisesa series of units each of which consists of two,thin, metallic plates or strips E, Fa, which are alike in contour; areformed of lint strips of proper width and length having each a series ofcorrugations some distance from the longitudinal margins oi the stripsacross the same, thereby leaving these marginal edges fiat. as shownat13, the corrugations starting and ending some distance from the endsoi" the strip to aord fiat surfaces 14:, at these ends, the object ofwhich will hereinafter appear. llhe apexes 15 of these corrugations arein but are somewhat above the plane of the flat surfaces 13, 1t, therebyforming longitudinal shoulders 16, so that when two of these strips areplaced. lace to C, and Y the core B.

12, extending from ltlil llll'i contour have each face, as illustratedin Figs. 7, 10, and 15, and in other figures there is formed between thetwo strips a con uit 17, the ends of which when in assembled conditionterminate in, and communicate with, the chambers C, D. These conduitsare successively enlarged by the corrugations of the strips, andcontractor constricted where meet, one of the objects of thesecorrugations being to increase the 'cooling area of the strips,'and toalford efl'ective means for positionln the cross bars of the heatconductor, as w' be later on described.

tween adjacent units of the cellular structure is placed means forassisting in the cooling effect of these units, which means compriseeach a bar of metal 23, of proper width, which bar has slots at regularintervals, the slots 24, extending to one half of the width of said bar23. A series, of cross bars J, of substantiall rectangular a slot medialy, extending to one half of the width of said cross bar. It has also atone end laterally extending ears or lugs 26, the distance from out toout over these rojections 26 being equal to the spaces 22, li etweenadjacent units at their margins, and the portion 27 of said cross barbeing equal to the distance between op-. posing units at the jointure 15of the corrugations. These cross bars J are-then placed on the bars 23with the slots in one engagingthe slots in the other element, whichbrings the opposing margins of the bars flush with the longitudinalmargins of the bars 23, as clearly shown in Figs. 13 and 14. The stripsE. Ea, forming a unit are not of the same width, the strip E beingnarrower than the strip Ea, a condition clearly illustrated in Fig. 15.The wider strip has its longitudinal margins bent at right angles, as at18, to receive the narrower strip E face to face, after which the"upstanding ledge 18 is turned down upon the flange 19 of the member Eand forced into clOSe C011- the tact therewith, thereby securely lookinga, at their longitu inal two members E, E marginal edges.

Two metallic plates G, H, in properly spaced relationship, are providedwith slotted apertures 20, the numb responds to the number of each'oneof these slots receiving a unit, the ends of theunits extendin planes ofthe H the left of Flg 9, and are bent over the plates as shown at 21,thus securely uniting the parts,said plates G, H, resting upon theuppermost and the lowermost corrugations to prevent displacementthereof.

' r the units have been secured to the plates G, H, the heat conductorsI are pushed into the spaces 22 between adjacent units, where thelateral lugs26 strike the longitudinal shoulders 16, of the members E,Ea,

-now assembled core is the corrugations,

the core can be handled er of which cor-- as indicated at and'themarginal edges 27 enter the V-shaped crotch between adjacentcorrugations, and thereby locate these conductors with their outer edgesflush with the longiudinal edges of the unit members. In this condition,a ready for the acid dipping bath, and then into a bath of moltensolder, which so thoroughly unites the parts as to make a homogeneousstructure of the same ready for bein placed into, and soldered to thecasing In order to prevent displacement of the cross bars J inhandlingbefore, and while being inserted into the core, I place the bars23 and the cross bars J into a suitable chuck, and then clench the endsof the cross bars adjacent the slots therein u on the strips 23,as'illustrated on a magnified scale in Fig. 14, which sufliciently holdsthem together until they are finall permanently united by the solder inthe so der dipping bath.

It may now be noted that by locking the marginal seams of the units inthe manner set forth, these seams and joints are so perfectly closedthat scarcely any solder can enter the same, and that the elements 23and J fit so closely between the units as to require only a trifle ofsolder to complete the union, so that there is less solder employed inthe construction of this radiator core than there is required in anyother radiator of the same capacity with which I am acquainted, it beinga fact that there is in this radiaup at least 2 lbs. less solder than inothers 0 t right angular, that is to say, the bars 23 are vertically,and the cross bars horizontally disposed, so that there can be nocompression or displacement of the parts when the structure is placedinto a clamp so that for dipping. This clamp is on the .plan of a framesimilar to a printers chase, and has movable means pressing on the sidesof the core for holding therein when the core is lifted out of the bathof molten solder.

n forming the corrugations in the strips E, Ea, a shortening of thestrips takes place which reduces the length thereof, and necesgins tocause them to correspond to the he strip after having been eorru- Inorder to assist in the flowing of the metal at these margins, thecorruga- 23, J, are rectilinear and antenna tions are graduallyflattened at their ends t il till

greater the cated in. dotted lines in as illustrated at 30, so as tomerge into'the shoulders 16. This construction is performed in suitablerolls and dies and accomplishes the object without straining orrupturing the metal.

it will also be noted that the cross bars J engage the ll-shapedportions of adjacent corrugations, thereby properly spacing the crossbars and causing them to retain their proper position until they arefinally integrally united to the bars 23 and the strips E,

Ea, in the solder bath. While primarily the bars 23 and cross bars J areemployed to prevent distortion of the core when being clamped into theholding frame for dipping, they serve the additional and very essentialobject of increasing the cooling effect of the air passing through thespaces 22 between the units by the heat conductivity of the metal of thebars and cross bars, which cooling effect is transmitted to the membersE, Ea, of the core E.

.lhe spaces between adjacent and connected strips E, Ea, afford verticalwater passages communicating with the water spaces C, l), in the casingA, while the spaces 22 between adjacent units form horizontal airpassages through which air is brought in contact with the metallicsurfaces of the radiator units to abstract heat from the water passingthrough these water passages; and the area of these metallic surfaceswithin a given space, the more eflicient the action of the cooling mediawill be. This increase of area is edected by corrugating the strips E,Ea, as described, while atthe same time the crotches between thecorrugations adord effective means for locating and securely retainingthe cross bars ill in position.

in Fig. 12 l[ have illustrated a modified form, 23, of the bar 23,forming the vertical member of the cooling element ll. This strip or bar23 is of but one half the width of the bar 23, and instead of beingslotted as at 24-, its marginal edges are itnotched, as at 246, thecross bars d being applied to these bars 23, the same as heretoforedescribed. llt is notched at its two longitudinal edges to render thesame reversible, that is to say, that the cross bars may be applied toeither edge, vwhich facilitates assembling. and that while the notcheson one edge receive the cross bars,-the notches "at the other edge serveto clench thecross bars to the vertical bars at these notches. And it isto be noted that tion there is less metal used in the bars 23 than thereis in the bars 23, which results in a slight saving in cost withoutnoticeably afi'ecting the efficiency of the device. These coolingelements are placed between the cell units at the outer margins thereofas indi- Eig. l0, and may i to, by contactin ins of these parts arealined, a matter which will be readily understood, by persons skilled inthe'art to which this invention appertains.

l have hereinbefore employed the terms heat-conductor and .fillerinterchange ably to designate the metallic structures placed into thespaces between adjacent units which serve to assist the walls of these.

units being cooled, or in other words, to add with these walls, themetalhc surfaces a ected by the air passing through these spaces,

While it have hereinbefore described with considerable minuteness thepreferred embodiment of my invention, ll desire it to be understood thatl am aware that changes in the details of construction may be made, andparts omitted without departing from the scope of my invention asdefined in the appended claims.

Having thus fully described this invention, ll claim as new, and desireto secure to myself by Letters Patent of the United @tateal. A radiatorof the nature described, comprising a multiplicity unit beingconstructed of two plates, said plates havin flat ends and hat lo'tudinal margins, sai margins having shoul ers, and a series oftransverse corrugations intermediate said ends, the transverse terminalsof said corrugations being I gradually flattened to merge into theshoulders aforesaid, said plates being placed longitudinal edges of oneplate overlapping the longitudinal edges of the other plate toaffordpermanent loclri means, and means of like units, each till tlti

lldli face to face, the

lltll for permanently unitingsaidunits' in spaced a eoreunit, said coreunit comprising two in this modified construcplates, one of said plateshaving flat longitudinal margins, the other plate having lilre flatmargins the edges of which are bent at right angles, there beinglongitudinal shoulders adjacent the longitudinal margins of said plates,there being between said longi tudinal margins transverse corru 'ations,said corrugations being pronouncedy flatsaid plates having tit ltd

tened at their ends and merging into said upon the vertical bar, thewhole being shoulders, said plates being placed face to permanentlyunited by being dipped into a face, the right angled bends at thelongitudibath of molten solder. 30 nal margins of one plate being bentover 4. A radiator of the nature described, inand clenched upon the flatmargins of the cluding a cellular core, said core comprising other plateto afford locking seams, said a series of vertical, parallel-spacedunits,

plates being permanently united at their each unit including two plates,each plate longitudinal margins by being dipped into having flat sideand end portions, a shoulder 35 a' bath of molten solder. in each plateadjacent the longitudinal mar- 3. In a radiator-of the nature described,gins thereof, a series of transverse corrugathaving spaced apartvertically disposed tions, said corrugations being approxin'iately watertubes, a filler between adjacent Water semi circular and adjoining oneanother to tubes, said filler consisting of a; vertically aflordsubstantially V-shaped erotches he- 40 disposed strip of metal, saidstrip having in tween them, said corrugations being flattened one of itslongitudinal edges a series of at their ends and merging into theshoulders equally spaced notches extending approxiaforesaid, and filler{bars between adjacent mately midway across said bar, and a seriesunits, said filler bars including each a vertiof cross-bars, eachcross-bar being a metallic cally disposed bar, a series of cross-barsse- 45 plate of a Width corresponding to the spaccured to said verticalbar medially of their ing apart of the Water tubes, and a length length,the ends of said cross-bars engaging equal to the Width of the verticalbar, said the crotches between the corrugations of plate having aportion of its length reduced opposing units. to afford shoulders, therebeing in said plates In testimony that I claim the foregoing 5o notchesequal in depth to the notches in the as my invention, I have hereuntoset my vertical bar, a cross-bar being inserted into hand. every notchin the vertical bar, the edges of the notches in the cross-bars beingclenched PHILMORE F. SPERY.

